Hey guys! I've searched this magnificent forum over for ideas on why my 6.0L is like a slow boat to China but haven't found anything. Can anyone help me?
From a dead stop, I floor it, it slowly starts to move, after several seconds, it has enough RPM to spool up the turbo, then starts to take off (set you back in the seat). In other words, when I floor it, I would expect it to put me back in the seat immediately (like all other diesels I've been in), but instead, the truck says "whoa, you want to go now? Well, gimme a little bit to work on it." Once the turbo has spooled up, it has "power" but you can tell it's still lacking.
Here's the specs:
- Bone stock 2006 F-350 6.0L automatic
- 85,000 miles
Here's the diagnostics:
- Fuel pressure: idle @ 70psi, WOT @ 65psi
- Boost: once spooled up, gets to ~25psi
- No trouble codes
- Just installed fuel pressure gauge and took off intake air tube going into the engine (post turbo/intercooler) and found a fairly substantial film of oil.
- Does not blow white/blue smoke out exhaust
- Fuel filters changed recently
- Cranks fine (hot or cold)
I've taken this thing to two different dealers, both telling me there's something going on, but they can't find it. One of them said there was some evidence of the injectors skipping, so they replaced 3 of them and the fan clutch. The other said the fuel tank was delaminating and replaced it. Neither of those "fixes" helped.
I hope I'm not abusing the forum, I'm just at my wits end trying to figure out why this thing acts so pathetic. If I've left anything out, please ask. Any and all help is greatly appreciated!